Draws your eye to the sight and increases contrast on dark targets. Double-faced, 30deg angle blade offers 2.5 MOA elevation per click. .100" wide version is faster to acquire at close range. Mfg: Xs Sight Systems SPECS: Stainless steel, black, matte finish. Includes sight adjustment tool..100" (2.5mm) wide post. .030" (7.6mm) wide, white stripe, square top.